I believe some newer cars do store data that could indicate lower octane gas was put in.
But if you’re still under warranty and your engine blows up, it suggests a problem with the manufacturing itself. Exceptions could be if you put in E85 that’s not recommended as it has much lower energy and the engine needs to make a ton of adjustments for that which might be out of range.
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Is there seriously an ability and reasonable chance that they could and would test the octane in your tank? That is surprising to me.
I believe some newer cars do store data that could indicate lower octane gas was put in.
But if you’re still under warranty and your engine blows up, it suggests a problem with the manufacturing itself. Exceptions could be if you put in E85 that’s not recommended as it has much lower energy and the engine needs to make a ton of adjustments for that which might be out of range.